forked from OSchip/llvm-project
Add a new lazily constructed mapping from Idx's the MBB they represent
llvm-svn: 11017
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@ -104,6 +104,12 @@ private: // Intermediate data structures
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/// This also provides a numbering of the basic blocks in the function.
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std::map<const BasicBlock*, std::pair<MachineBasicBlock*, unsigned> > BBMap;
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/// BBIdxMap - This contains the inverse mapping of BBMap, going from block ID
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/// numbers to the corresponding MachineBasicBlock. This is lazily computed
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/// when the getIndexMachineBasicBlock() method is called.
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std::vector<MachineBasicBlock*> BBIdxMap;
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const MRegisterInfo *RegInfo;
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MachineInstr **PhysRegInfo;
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@ -126,6 +132,9 @@ public:
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return BBMap.find(BB)->second;
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}
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/// getIndexMachineBasicBlock() - Given a block index, return the
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/// MachineBasicBlock corresponding to it.
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MachineBasicBlock *getIndexMachineBasicBlock(unsigned Idx);
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/// killed_iterator - Iterate over registers killed by a machine instruction
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///
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@ -243,6 +252,7 @@ public:
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RegistersKilled.clear();
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RegistersDead.clear();
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BBMap.clear();
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BBIdxMap.clear();
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}
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/// getVarInfo - Return the VarInfo structure for the specified VIRTUAL
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